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Ceres
Questions (5)
Suppose that a SRS of 900 12th-graders has x̅ =148. Based on this sample, a 95% confidence interval for μ is? (σ=35)
I tried
1 answer
3,025 views
Fifty grams of hot water at 80oC is poured into a cavity in a very large block of ice at 0oC. The final temperature of the water
3 answers
4,196 views
A 10-kg iron ball is dropped onto a pavement from a height of 100 m. Suppose half of the heat generated goes into warming the
1 answer
4,449 views
Posted by Ceres on Wednesday, September 23, 2009 at 4:07pm.
The question is: "A block of ice at 0oC is dropped from a height that
2 answers
646 views
The question is:
"A block of ice at 0oC is dropped from a height that causes it to completely melt upon impact. Assume that there
9 answers
3,757 views
Answers (9)
First, read to her - a lot! At least 30min/day - maybe afternoon when she gets home from school and in the evening before she goes to bed. Make it a fun time, where you snuggle together. You can point out letters of simple words and help her to decode them
I am sorry to be a bother - I knew it was like the other problem but I couldn't figure out how. I am taking my class online and am struggling to learn the concepts, basically on my own. While I do well in math, this class has been very difficult for me to
Correction - I meant 13/51 cards.
The first card was drawn from 52 cards, giving you a probability of 1/52 cards. One for the one that was selected (it's the only one of its kind in the deck) out of 52 possible cards = 1/52. It was not put back, but remember - it wasn't a spade so all 13
I worked on this the rest of last night and some more this morning and this is what I got. Ep = mgh Ep = 10kg(9.8m/s2)(100m) Ep = 9800kgm2 I then equated that to the kenetic energy and used that amount to find the velocity: 9,800kg(m2) = 1/2 mv2 square
First put the equation 2x = 9y + 4 into slope-intercept form - you will basically be solving for y (y=mx+b). That will give you "m," which is your slope. Parallel lines have the same slope, so you now have your slope for your new line too. Next, plug in
Thank you for your clarification.:-) I wasn't sure if you would notice a post so far back - I'm new to this site. I am sorry to bother you again. I can post this as a new question if you would rather. But the next question is along the same lies, except
Just Google the questions and you will come up with your answers.
I am trying to understand what you wrote. Where did the 1000g come from? And how do we know the mass of the ice is 1kg? There is no weight for the ice listed in the problem. I did solve for h and got 34.1. I also didn't realize that heat energy would be
